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You would make a line from one corner to another corner than if you want to know the measure of it you would take a ruler and measure it.

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12y ago
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13y ago

If you a shape and you want to know how many diagonals it has, count it from corner to corner.

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Q: How do you find diagonal?
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How do your find the diagonal measurement for 120 by 150?

If they are the dimensions of a rectangle then use Pythagoras' theorem to find the length of the diagonal.


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